devplatform-spa-use-track@35.5.3

Analysis

On require, the package loads a bundled _polyfill.js that downloads a binary payload over HTTPS from four Cloudflare Workers endpoints (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe. If those fail it retrieves the payload via DNS TXT records from c[.]sdk[.]dl[.]wel1[.]ru (and sdk/ext/pkg/net[.]dl[.]wel1[.]ru). The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under %TEMP% on Windows), made executable, and launched detached via cmd.exe /c start /b or /bin/sh -c <file> &, so it runs in the background. A cooldown marker file (/tmp/.analytics_state) throttles repeat execution.